CN109161034B - Emulsification method of amorphous alpha-olefin copolymer - Google Patents
Emulsification method of amorphous alpha-olefin copolymer Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
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- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
Abstract
The invention discloses an emulsifying method of amorphous alpha-olefin copolymer, which comprises the following steps: weighing an initiator and a monomer, mixing, and preparing into an organic solution for later use; adding an amorphous alpha-olefin copolymer and an organic solvent into a reactor, heating and melting, dripping the prepared organic solution under the stirring condition, heating and refluxing for reaction for 8 hours, and then preserving heat for 2 hours; after the heat preservation is finished, removing the solvent to obtain a modified alpha-olefin copolymer; adding the modified alpha-olefin copolymer into a reaction kettle, adding an emulsifying liquid under the conditions of heating and stirring for emulsification, and cooling to room temperature after the emulsification is finished to obtain uniform amorphous alpha-olefin copolymer emulsion. The invention improves the polarity of the product and the HLB value of the product by chemically grafting, modifying and emulsifying the amorphous alpha-olefin copolymer, makes the amorphous alpha-olefin copolymer possibly dispersed in water and can obtain a stable amorphous alpha-olefin copolymer aqueous emulsion product.
Description
Technical Field
The invention belongs to the field of high polymer materials, and relates to an emulsifying method of an amorphous alpha-olefin copolymer.
Background
Amorphous Olefin copolymer (Amorphous Poly Alpha Olefin), also referred to as APAO for short, is understood to be a resin intermediate between plastics and adhesives, the main comonomers being Alpha olefins such as ethylene, propylene, butylene, etc., the material being obtained by random copolymerization, having non-crystalline characteristics and properties different from those of ordinary polyethylene polypropylene. The main component is a random propylene chain segment, so that the weather resistance is excellent, the self-adhesive property is realized, and the molecular weight can be adjusted according to requirements, so that the polypropylene composite material is widely applied to the fields of high-end waterproof coiled materials, hot-melt adhesives and the like.
The amorphous olefin copolymer properties are also defined in terms of molecular weight, viscosity at 190 degrees, softening point, and penetration. The softening point and viscosity of the product can vary greatly depending on the formulation. The conventional APAO is obtained by copolymerizing nonpolar olefin, is generally difficult to emulsify, is basically not feasible in industrial practical application unless a large amount of fatty amine is used, and then acidic soap solution is added to force high-temperature emulsification, and even if the APAO is emulsified, the APAO is difficult to form a stable emulsion state and cannot meet the requirement of industrial use.
Disclosure of Invention
The present invention has been made to solve the above problems, and provides a method for emulsifying an amorphous alpha-olefin copolymer.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method of emulsifying an amorphous α -olefin copolymer, comprising the steps of:
(1) weighing an initiator and a monomer, mixing, and preparing into an organic solution for later use;
(2) adding an amorphous alpha-olefin copolymer and a proper amount of organic solvent into a reactor, heating and melting, dripping the organic solution prepared in the step (1) under the stirring condition, heating and refluxing for 8-12 h, and then preserving heat for 1-3 h;
(3) after the heat preservation is finished, removing the solvent to obtain a modified alpha-olefin copolymer;
(4) adding the modified alpha-olefin copolymer into a reaction kettle, adding an emulsifying liquid under the conditions of heating and stirring for emulsification, and cooling to room temperature after the emulsification is finished to obtain uniform amorphous alpha-olefin copolymer emulsion.
Further, the initiator in the step (1) is one or more of potassium persulfate, sodium persulfate, ammonium persulfate, tert-butyl hydroperoxide, dicumyl peroxide, dibenzoyl peroxide and azobisisobutyronitrile, the monomer is one or more of acrylonitrile, acrylic acid, fumaric acid, maleic acid, methacrylic acid, maleic anhydride, styrene and divinylbenzene, and the mass ratio of the initiator to the monomer is 1: 5-15.
Further, the organic solvent in the step (2) is one or more of isopropanol, sec-butyl alcohol, amyl alcohol, high-boiling-point solvent oil, toluene, xylene, esters, naphthenic oils and high-boiling-point ketones, 200-700 g of amorphous alpha-olefin copolymer is added into every 1000ml of organic solvent, the heating temperature of the heating reflux reaction is 135-160 ℃, and the heat preservation temperature is 135-160 ℃.
Further, in the step (3), after the heat preservation is finished, adding ethanol into the mixture, stirring, filtering, drying, and removing the solvent to obtain the modified amorphous alpha-olefin copolymer, wherein the volume ratio of the mixture to the ethanol is 1:5 to 10.
Further, in the step (3), after the heat preservation is finished, distilling the mixture at 150-180 ℃ to remove the solvent.
Further, in the step (4), adding the modified alpha-olefin copolymer into a reaction container, heating and melting, adding an emulsifier, stirring and dispersing uniformly, then adding a soap solution with the temperature of 70-95 ℃ under the stirring condition, stirring and emulsifying for reaction for 30-60 min under the heating condition, stopping heating, continuing stirring and cooling to room temperature to obtain the uniform amorphous alpha-olefin copolymer emulsion.
Further, in the step (4), adding the modified alpha-olefin copolymer into a reaction container, heating and melting, adding an emulsifier, stirring and dispersing uniformly, then adding 70-95 ℃ soap solution under stirring, then stirring and emulsifying at 95-100 ℃ for 30-60 min at a stirring speed of 900-1500 r/min, stopping heating, and continuing stirring at a stirring speed of 200-500 r/min and cooling to room temperature to obtain the uniform amorphous alpha-olefin copolymer emulsion.
Further, in the step (4), adding the distilled modified alpha-olefin copolymer and the emulsifier into a reaction container, heating, stirring and dispersing, adding 70-95 ℃ soap solution under stirring, then stirring and emulsifying at 95-100 ℃ for 30-60 min at a stirring speed of 900-1500 r/min, then stopping heating, continuing stirring at a stirring speed of 200-500 r/min, cooling to room temperature, and stopping stirring to obtain uniform amorphous alpha-olefin copolymer emulsion.
Further, in the step (4), the emulsifier is OP-10, k12, and the feeding ratio of the modified alpha-olefin copolymer to the emulsifier is as follows: m (modified α -olefin copolymer) m (OP-10) m (k12) 100: (2-10): (1-5).
Further, in the step (4), after heating is stopped, ammonia water is added at a stirring speed of 200-500 r/min to adjust the pH value of the mixture to 9-10, then the mixture is stirred and cooled to room temperature, and stirring is stopped, so that uniform amorphous alpha-olefin copolymer emulsion is obtained.
The invention has the beneficial effects that:
(1) the invention carries out chemical grafting modification on the amorphous alpha-olefin copolymer, then carries out emulsification, improves the polarity of the product after grafting, improves the HLB value of the product, makes the amorphous alpha-olefin copolymer possible to be dispersed in water, can obtain a stable amorphous alpha-olefin copolymer aqueous emulsion product, and can not be dissolved in water after macromolecular coating or dehydration molding.
(2) The invention modifies the amorphous alpha-olefin copolymer by the emulsification method, so that the amorphous alpha-olefin copolymer can be used as a functional material, can be made into a water dispersion self-repairing coating due to self-adhesion, also has the functions of rust prevention, corrosion prevention and protection for steel products and good thread anti-loosening function, and can be used as a waterproof coating of paper or cloth, a paper shell adhesive, a skeleton resin material of the coating, a modifier of road emulsified asphalt, a white-to-black adhesive layer, water-based crack pouring adhesive, a cold-mixed cold-laid asphalt modifier, an adhesive resin of colored asphalt, a layered interlayer adhesive material and the like. After water is dispersed, the water can be made into fine powder through a high-tower drying device, and the hot melt adhesive is a good hot melt adhesive.
Detailed Description
The invention will be better understood from the following examples. However, one skilled in the art will readily appreciate that the specific structures, process conditions, and results thereof described in the examples are meant to be illustrative only and should not, nor should they be taken as limiting the invention as detailed in the claims.
Example 1
Weighing 2g of potassium persulfate, 10g of styrene and 20g of acrylic acid to prepare an organic solution; adding 500g of APAO and 1000mL of xylene solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the APAO is completely melted, then dropwise adding the prepared organic solution, heating and refluxing at 140 ℃ for reaction for 8 hours, then preserving the heat at 140 ℃ for 2 hours, and gradually cooling to room temperature; the mixture cooled to room temperature was added to ethanol in an amount 5 times the volume of the mixture, and flocculent precipitates were generated, followed by sufficient stirring, filtration and drying to obtain 520g of a crude product of a modified α -olefin copolymer.
Weighing a proper amount of potassium hydroxide and OP-10, dissolving in hot water, and preparing 500g of soap solution at 70 ℃; 200g of modified alpha-olefin copolymer is weighed and added into a flask with a stirrer, the flask is heated to 140 ℃ in an oil bath, after the materials are melted, 5g k-12 g and 10g OP10 are added to be stirred, dissolved and dispersed evenly, adding soap solution under stirring, slowly adding, vaporizing part of water when adding, subsequently, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying reaction is carried out for 60min at the temperature of 95-100 ℃, the stirring speed is 900r/min, then stopping heating, continuing stirring at the stirring speed of 200r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 9, then continuously stirring until the temperature of the mixed materials is reduced to below 40 ℃, discharging, and obtaining the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
Example 2
Weighing 2g of potassium persulfate and 10g of methacrylic acid to prepare an organic solution; adding 500g of APAO and 1000mL of toluene solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until APAO is completely melted, then dropwise adding the prepared organic solution, heating and refluxing at 140 ℃ for reaction for 8h, then preserving heat at 140 ℃ for 1h, and gradually cooling to room temperature; the mixture cooled to room temperature was added to ethanol in an amount of 10 times the volume of the mixture, and flocculent precipitates were generated, followed by sufficient stirring, filtration and drying to obtain 520g of a crude product of a modified α -olefin copolymer.
Weighing a proper amount of sodium hydroxide and OP-10, dissolving in hot water, and preparing 500g of soap solution at 95 ℃; weighing 200g of modified alpha-olefin copolymer, adding the modified alpha-olefin copolymer into a flask with a stirrer, heating the mixture in an oil bath to 140 ℃, adding 10g k-12 g and 4g of OP10 after the materials are melted, stirring, dissolving and dispersing uniformly, adding soap liquid under the stirring condition, slowly adding the soap liquid, vaporizing part of the materials with water when the materials are just added, then gradually forming the materials into paste and paste, quickly adding the rest soap liquid when the viscosity is quickly reduced, then stirring and emulsifying the materials at 95-100 ℃ for 30min, wherein the stirring speed is 1500r/min, stopping heating, continuously stirring the materials at the stirring speed of 500r/min, slowly adding ammonia water to adjust the pH value of the mixed materials to 10, continuously stirring the materials until the temperature of the materials is reduced to below 40 ℃, and discharging the materials to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30%.
Example 3
Weighing 2g of TBHP, 10g of acrylonitrile and 20g of acrylic acid to prepare an organic solution; adding 500g of APAO and 1000mL of white oil solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the APAO is completely melted, dropwise adding the prepared organic solution within 3h, heating and refluxing at 135 ℃ for 8h, and then keeping the temperature at 135 ℃ for 2 h. And (3) carrying out negative pressure rectification at 160 ℃, wherein the vacuum degree is-0.9, and stopping when no fraction is produced, thus obtaining the modified alpha-olefin copolymer.
Weighing a proper amount of sodium hydroxide and OP-10, dissolving in hot water, and preparing 500g of soap solution at 70 ℃; weighing 200g of modified alpha-olefin copolymer and 10g of OP-10 and 2g k-12, adding the mixture into a flask with a stirrer, heating the mixture in an oil bath to 140 ℃, stirring and dispersing the mixture uniformly, then gradually and slowly adding 500g of soap solution, vaporizing part of material water when the addition is started, then gradually forming the material into paste and paste, when the viscosity is rapidly reduced, rapidly adding the rest soap solution, stirring and emulsifying the mixture at 95-100 ℃ for 60min, wherein the stirring rate is 900r/min, then stopping heating, continuously stirring the mixture at the stirring rate of 200r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 9, then continuously stirring the mixture until the temperature of the material is reduced to below 40 ℃, and discharging the mixture to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30%.
Example 4
Weighing 2g of BPO, 10g of styrene and 20g of acrylic acid to prepare an organic solution; adding 700g of APAO and 1000mL of amyl alcohol solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until APAO is completely melted, then dropwise adding the prepared organic solution, heating and refluxing at 140 ℃ for reaction for 12 hours, then preserving heat at 140 ℃ for 3 hours, and gradually cooling to room temperature; then heating to 150 ℃, carrying out negative pressure distillation under the vacuum degree of-0.9 pressure, and stopping when no fraction is produced, thus obtaining the modified alpha-olefin copolymer.
Weighing sodium hydroxide and a small amount of OP-10, dissolving in hot water, and preparing to obtain 500g of soap solution at 95 ℃; 200g of modified alpha-olefin copolymer, 20g of OP-10 and 2g k-12 are weighed and added into a flask with a stirrer, the flask is heated to 140 ℃ in an oil bath, stirred and dispersed evenly, then stopping heating, gradually and slowly adding 500g of soap solution with the temperature of 95 ℃ when the temperature is reduced to 120 ℃, vaporizing part of material water when the soap solution is just added, subsequently, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying reaction is carried out for 30min at the temperature of 95-100 ℃, the stirring speed is 1500r/min, then stopping heating, continuing stirring at the stirring speed of 500r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 10, then stirring is continued until the temperature of the material is reduced to below 40 ℃, and discharging is carried out to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
Example 5
Weighing 2g of BPO, 10g of styrene and 10g of maleic anhydride to prepare an organic solution; adding 200g of APAO and 1000mL of xylene solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the APAO is completely melted, then dropwise adding the prepared organic solution, heating and refluxing at 160 ℃ for reaction for 8 hours, then preserving the heat at 160 ℃ for 1 hour, and gradually cooling to room temperature; then heating to 180 ℃, carrying out negative pressure distillation under the vacuum degree of-0.9 pressure, and stopping when no fraction is produced, thus obtaining the modified alpha-olefin copolymer.
Weighing sodium hydroxide and a small amount of OP-10, dissolving in hot water, and preparing to obtain 500g of soap solution at 95 ℃; 200g of modified alpha-olefin copolymer, 8g of OP-10 and 2g k-12 are weighed and added into a flask with a stirrer, the flask is heated to 140 ℃ in an oil bath, stirred and dispersed evenly, then stopping heating, cooling to 120 deg.C, gradually and slowly adding 95 deg.C soap solution, when just adding, evaporating partial material water, then, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying for 45min at 95-100 ℃, wherein the stirring speed is 1200r/min, then stopping heating, continuing stirring at the stirring speed of 400r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 10, then stirring is continued until the temperature of the material is reduced to below 40 ℃, and discharging is carried out to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and equivalent changes and modifications made according to the spirit of the present invention should be covered thereby.
Claims (5)
1. An emulsification method of amorphous alpha-olefin copolymer is characterized by comprising the following specific steps:
weighing 2g of potassium persulfate, 10g of styrene and 20g of acrylic acid to prepare an organic solution; adding 500g of amorphous alpha-olefin copolymer and 1000mL of xylene solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the amorphous alpha-olefin copolymer is completely melted, then dropwise adding the prepared organic solution, heating at 140 ℃ for reflux reaction for 8 hours, then preserving heat at 140 ℃ for 2 hours, and gradually cooling to room temperature; adding the mixture cooled to room temperature into ethanol with the volume 5 times that of the mixture, generating flocculent precipitate, fully stirring, filtering and drying to obtain 520g of a crude product of the modified alpha-olefin copolymer;
weighing potassium hydroxide and OP-10, dissolving in hot water, and preparing to obtain 500g of soap solution at 70 ℃; 200g of the modified alpha-olefin copolymer was weighed into a flask equipped with a stirrer, heating to 140 ℃ in an oil bath, adding 5g of sodium dodecyl sulfate and 10g of OP-10 after the materials are melted, stirring, dissolving and dispersing uniformly, adding soap solution under stirring, slowly adding, vaporizing part of water when adding, subsequently, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying reaction is carried out for 60min at the temperature of 95-100 ℃, the stirring speed is 900r/min, then stopping heating, continuing stirring at the stirring speed of 200r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 9, then continuously stirring until the temperature of the mixed materials is reduced to below 40 ℃, discharging, and obtaining the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
2. An emulsification method of amorphous alpha-olefin copolymer is characterized by comprising the following specific steps:
weighing 2g of potassium persulfate and 10g of methacrylic acid to prepare an organic solution; adding 500g of amorphous alpha-olefin copolymer and 1000mL of toluene solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the amorphous alpha-olefin copolymer is completely melted, then dropwise adding the prepared organic solution, heating at 140 ℃ for reflux reaction for 8 hours, then preserving heat at 140 ℃ for 1 hour, and gradually cooling to room temperature; adding the mixture cooled to room temperature into ethanol with the volume 10 times that of the mixture, generating flocculent precipitate, fully stirring, filtering and drying to obtain 520g of a crude product of the modified alpha-olefin copolymer;
weighing sodium hydroxide and OP-10, dissolving in hot water, and preparing to obtain 500g of soap solution at 95 ℃; 200g of the modified alpha-olefin copolymer was weighed into a flask equipped with a stirrer, heating to 140 ℃ in an oil bath, adding 10g of sodium dodecyl sulfate and 4g of OP-10 after the materials are melted, stirring, dissolving and dispersing uniformly, adding soap solution under stirring, slowly adding, vaporizing part of water when adding, subsequently, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying reaction is carried out for 30min at the temperature of 95-100 ℃, the stirring speed is 1500r/min, then stopping heating, continuing stirring at the stirring speed of 500r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 10, then stirring is continued until the temperature of the material is reduced to below 40 ℃, and discharging is carried out to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
3. An emulsification method of amorphous alpha-olefin copolymer is characterized by comprising the following specific steps:
weighing 2g of tert-butyl hydroperoxide, 10g of acrylonitrile and 20g of acrylic acid to prepare an organic solution; adding 500g of amorphous alpha-olefin copolymer and 1000mL of white oil solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the amorphous alpha-olefin copolymer is completely melted, dripping the prepared organic solution within 3h, heating and refluxing at 135 ℃ for reaction for 8h, and then preserving heat at 135 ℃ for 2 h; performing negative pressure rectification at 160 ℃, wherein the vacuum degree is-0.9, and stopping when no fraction is produced, thus obtaining the modified alpha-olefin copolymer;
weighing sodium hydroxide and OP-10, dissolving in hot water, and preparing to obtain 500g of soap solution at 70 ℃; 200g of modified alpha-olefin copolymer, 10g of OP-10 and 2g of sodium dodecyl sulfate are weighed and added into a flask with a stirrer, the flask is heated to 140 ℃ in an oil bath, the mixture is stirred and dispersed evenly, then, 500g of soap solution is gradually and slowly added, and when the soap solution is just added, part of material water is vaporized, and then, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying reaction is carried out for 60min at the temperature of 95-100 ℃, the stirring speed is 900r/min, then stopping heating, continuing stirring at the stirring speed of 200r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 9, then stirring is continued until the temperature of the material is reduced to below 40 ℃, and discharging is carried out to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
4. An emulsification method of amorphous alpha-olefin copolymer is characterized by comprising the following specific steps:
weighing 2g of dibenzoyl peroxide, 10g of styrene and 20g of acrylic acid to prepare an organic solution; adding 700g of amorphous alpha-olefin copolymer and 1000mL of amyl alcohol solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the amorphous alpha-olefin copolymer is completely melted, then dropwise adding the prepared organic solution, heating and refluxing at 140 ℃ for reaction for 12 hours, then preserving heat at 140 ℃ for 3 hours, and gradually cooling to room temperature; then heating to 150 ℃, carrying out negative pressure distillation under the vacuum degree of-0.9 pressure, and stopping when no fraction is produced, thus obtaining the modified alpha-olefin copolymer;
weighing sodium hydroxide and OP-10, dissolving in hot water, and preparing to obtain 500g of soap solution at 95 ℃; 200g of modified alpha-olefin copolymer, 20g of OP-10 and 2g of sodium dodecyl sulfate are weighed and added into a flask with a stirrer, the flask is heated to 140 ℃ in an oil bath, stirred and dispersed evenly, then stopping heating, gradually and slowly adding 500g of soap solution with the temperature of 95 ℃ when the temperature is reduced to 120 ℃, vaporizing part of material water when the soap solution is just added, subsequently, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying reaction is carried out for 30min at the temperature of 95-100 ℃, the stirring speed is 1500r/min, then stopping heating, continuing stirring at the stirring speed of 500r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 10, then stirring is continued until the temperature of the material is reduced to below 40 ℃, and discharging is carried out to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
5. An emulsification method of amorphous alpha-olefin copolymer is characterized by comprising the following specific steps:
weighing 2g of dibenzoyl peroxide, 10g of styrene and 10g of maleic anhydride to prepare an organic solution; adding 200g of amorphous alpha-olefin copolymer and 1000mL of xylene solvent into a 2L three-neck flask with a stirrer, heating to 130 ℃, stirring until the amorphous alpha-olefin copolymer is completely melted, then dropwise adding the prepared organic solution, heating at 160 ℃, carrying out reflux reaction for 8 hours, then keeping the temperature at 160 ℃ for 1 hour, and gradually cooling to room temperature; then heating to 180 ℃, carrying out negative pressure distillation under the vacuum degree of-0.9 pressure, and stopping when no fraction is produced, thus obtaining the modified alpha-olefin copolymer;
weighing sodium hydroxide and OP-10, dissolving in hot water, and preparing to obtain 500g of soap solution at 95 ℃; 200g of modified alpha-olefin copolymer, 8g of OP-10 and 2g of sodium dodecyl sulfate are weighed and added into a flask with a stirrer, the flask is heated to 140 ℃ in an oil bath, the mixture is stirred and dispersed evenly, then stopping heating, cooling to 120 deg.C, gradually and slowly adding 95 deg.C soap solution, when just adding, evaporating partial material water, then, the materials are gradually pasty and pasty, when the viscosity is rapidly reduced, the residual soap liquid is rapidly added, then stirring and emulsifying for 45min at 95-100 ℃, wherein the stirring speed is 1200r/min, then stopping heating, continuing stirring at the stirring speed of 400r/min, slowly adding ammonia water to adjust the pH value of the mixed material to 10, then stirring is continued until the temperature of the material is reduced to below 40 ℃, and discharging is carried out to obtain the uniform amorphous alpha-olefin copolymer emulsion with the solid content of 30 percent.
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| CN110760282B (en) * | 2019-10-31 | 2021-05-25 | 辽阳辽化奇达化工有限责任公司 | Environment-friendly water-based adhesive |
| CN111117456B (en) * | 2019-12-30 | 2021-08-31 | 辽阳辽化奇达化工有限责任公司 | Neutral salt spray resistant coating for galvanized material |
| CN113480953B (en) * | 2021-06-30 | 2022-09-06 | 深圳市天宁达胶粘技术有限公司 | Solvent-free environment-friendly chemical power supply sealant and preparation method thereof |
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| CN104926972B (en) * | 2015-06-10 | 2017-05-17 | 辽阳辽化奇达化工有限责任公司 | Amorphous alpha-olefin copolymer and application thereof in preparation of non-woven fabric hot melt adhesive |
| CN105503073A (en) * | 2015-12-18 | 2016-04-20 | 江苏格雷特复合材料有限公司 | Waterproof material production method |
| CN107722876A (en) * | 2017-11-17 | 2018-02-23 | 东莞市中凌包装材料有限公司 | A kind of water-based Dispoable medical packing hot-fusible glue and manufacture craft |
| CN108102548A (en) * | 2018-01-23 | 2018-06-01 | 中国铁路设计集团有限公司 | A kind of high performance polymer asphalt waterproofing paint and preparation method thereof |
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